What is this passage mainly about? a. the challenges that prospective drone delivery companies are facing b. the effect drone delivery will have on truck delivery companies c. the dangerous side-effects of drone delivery d. the solutions that prospective drone delivery companies have proposed

Which of the following junctions uses connexons to make channels?

Name all the cell-cell and cell-ECM junctions shown here 1-6.  (Intermediate filaments are blue and actin filaments are red).   . word bank:  focal adhesion, adhesion belt, tight junction, gap junction, desmosome, hemidesmosome (use same spelling, no caps, no periods)  

Match the transmembrane proteins to their functions.

Label or identify these different organizations of actin.  Word bank: parallel bundle =1, gel =2, contractile bundle=3, branched network =4.  Just use the number to avoid spelling issues.

Someone shines a bright light in your face causing your eyes to flinch and pupils slightly dilate. What muscles cells are being worked here? 

Frog skeletal muscle contains thick filaments that are 3.0um long and thin filaments 2.0 um long.  If the uncontracted sarcomere is 4.4 um long, and the contracted sarcomere is 3.4 um long, what is the length of the A bands in micrometers   and I bands before contraction?  And after contraction what is the size of the A band and I bands in micrometers?  Your answer should be a number with one figure after a decimal point like 1.0 or 1.1 as examples.

Which of the following experimental changes would most likely cause a microtubule to rapidly depolymerize, even if tubulin dimers are still available?

Intermediate fibers are made up of many proteins, such as, 

What artist is especially known for a theatrical treatment of light and shadow, as seen in the magnificentEntombment of Christ?